The short answer
Inlays and onlays are custom porcelain restorations made in a lab and bonded into a tooth with a cavity or fracture too large for a filling but not large enough to need a full crown. An inlay fits within the cusps of a tooth; an onlay covers one or more cusps. They preserve more healthy tooth structure than crowns and can last 10–30 years.
- Also called
- Partial crowns, indirect fillings
- Visits
- 2
- Material
- Porcelain or composite
- Lifespan
- 10–30 years
Who inlays & onlays is right for
- Large cavities on molars or premolars
- Cracked or broken cusps
- Replacing large, old silver fillings
- Patients who want to avoid a full crown
What to expect, step by step
Remove decay
The tooth is numbed and cleaned of decay or old filling.
Scan
An impression is sent to our dental lab.
Temporary
A temporary protects the tooth for about two weeks.
Bond
The custom inlay or onlay is bonded and polished.
Inlay, onlay or crown — how do we decide?
We always aim to save as much natural tooth as possible. If the cusps — the pointed chewing edges — are strong, an inlay is enough. If one or more cusps are weak or broken, an onlay rebuilds them. If most of the tooth is compromised, a crown is safest.
Inlays & Onlays cost in Montebello
Most PPO plans cover inlays and onlays similarly to crowns, around 50% after deductible. We provide a written estimate before treatment.
Most major PPO plans and Denti-Cal accepted. Cash and card patients welcome, with financing for qualifying patients. See insurance & financing.
Inlays & Onlays FAQs
Are inlays and onlays better than fillings?
For large cavities, yes. They are stronger and more durable because they are crafted in a lab and bonded as a single piece.
Do onlays hurt?
The tooth is numbed during preparation. Most patients have mild sensitivity, if any, afterward.
Will an onlay look natural?
Yes. Porcelain is shade-matched and nearly invisible.
How long do onlays last?
With good care, 10 to 30 years.
Medically reviewed by Dr. Lina Shahinyan, DDS, MS· Source: ADA MouthHealthy
